After Effects path between nulls

path_between_nulls.js

offset = [thisComp.width, thisComp.height]/2
p1 = thisComp.layer("P1").toComp([0,0]).slice(0,2) - offset
p2 = thisComp.layer("P2").toComp([0,0]).slice(0,2) - offset
t1 = thisComp.layer("T1").toComp([0,0]).slice(0,2) - offset - p1
t2 = thisComp.layer("T2").toComp([0,0]).slice(0,2) - offset - p2

ps = [p1, p2]
in_tangents = [[0,0], t2]
out_tangents = [t1, [0,0]]
createPath(ps, in_tangents, out_tangents, is_closed=false)

Thank you. I used this to create realistic moving phone cords in an animated illustration. Cheers!